I googled this and found this forum and It was the quickest and easy solution I found for the same issue. So I joined. Thanks for posting the issue and the response. Now I know where to come for what I am sure will continued learning curve of all the options.

this is the third times this happened on mine. the battery pull is great to resolve it but does anyone know how to keep it from occurring?

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This usually happens when the phone tries switching into Car Dock Mode..when its not in an actual Car Dock. Look around and make sure you dont have the phone near any magnetic things such as magnets(duh..lol), phone cases with magnetic clasps, large stereo sprakers etc etc...

I googled this information because I tried to fix the problem on the display settings and I couldn't. I was already panicking and then I found this forum and signed up. All I did was reboot my phone and the problem got fixed without having to remove the battery. Thank you very much!